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CXA3092N

4ch. Read/Write Amplifier for Thin Film Head of Hard Disk Drive

Sony Semiconductor 

CXA3092N

4ch. Read/Write Amplifier for Thin Film Head of Hard Disk Drive

For the availability of this product, please contact the sales office.

Description

The CXA3092N is a Read/Write Amplifier for the

thin film head of hard disk drive and designed to

handle up to 4 channel heads.

20 pin SSOP (Plastic)

Features

• Operate on single +5 V power supply

• Low power consumption

Read : 85 mW

Write : 115 mW + IW ×5

Idle : 8 mW

• Designed for two terminal thin-film or MIG heads

• Read amplifier emitter follower output featuring

325 times gain (typ).

• Differential input capacitance for Read : 6pF (typ)

• Input noise : 0.47 nV / √ Hz (typ)

• Write current range : 5 to 15 mA

• Differential Head voltage swing : 6.8 Vp-p (typ)

• Differential P-ECL write data input

• Built-in write unsafe detection circuit.

• Built-in Servo write function (2/4 ch).

• Built-in IC protection circuit for short of head to

GND.

• Read data outputs are high impedance in write

mode.

• Unselected head voltage is GND potential.

• Built-in supply voltage monitor circuit prohibits

incorrect write during power on or abnormal

voltage.

• Self switching damping resistance (RD = 350 Ω).

Absolute Maximum Ratings (Ta=25 °C)

• Supply voltage

VCC

6

V

• Write current

IW

20 mAo-p

• Operating temperature Topr –20 to +75 °C

• Storage temperature Tstg –55 to +150 °C

• Allowable power dissipation

PD

800 mW

• WUS/SE pin input current

ISEH

15

mA

Recommended Operating Conditions

• Supply voltage

VCC 5.0 V±10 %

• Write current

IW

5 to 15 mAo-p

Function

Read, Write and Write unsafe detection for HDD,

power supply ON/OFF detection.

Structure

Bipolar silicon monolithic IC

Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by

any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the

operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.

—1—

E96713-TE

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